/Engine/Plugins/Experimental/GeometryScripting/Source/GeometryScriptingCore/Public/GeometryScript/MeshQueryFunctions.h
Compute the interpolated UV (A*UV1+ B*UV2+ C*UV3), where (A,B,C)=BarycentricCoords and the UV positions are taken from the specified TriangleID in the specified UVSet of the TargetMesh.
static [UDynamicMesh](API\Runtime\GeometryFramework\UDynamicMesh) * GetInterpolatedTriangleUV ( [UDynamicMesh](API\Runtime\GeometryFramework\UDynamicMesh) * TargetMesh, int32 UVSetIndex, int32 TriangleID, FVector BarycentricCoords, bool & bTriHasValidUVs, FVector2D & InterpolatedUV )